TechnWaves Tax Regime Calculator

Compare old and new tax regime estimates with 80C, 80D, NPS, HRA, home loan interest, and salary deduction inputs.

Use this calculator to compare old and new tax regime estimates using annual income, salary deduction and old-regime deductions such as 80C, 80D, NPS, HRA, home loan interest and other eligible deductions.

It is useful when you are deciding which tax regime may reduce tax for the year, especially if you have investments, rent, insurance, home loan interest or NPS contributions.

The lower estimate is only a starting point. Actual regime selection depends on eligibility, proofs, employer declaration rules, filing rules and special income treatment.

Review the result before filing because the best regime can change every year when income, deductions, family expenses, rent or loan interest changes.

When should you use this tool?

• You want to compare old and new regime before filing.
• You have deductions and want to see whether old regime still helps.
• You are planning tax-saving investments for the year.
• You want a quick estimate before speaking with your accountant.

How to use this tool

• Enter annual income and choose whether salary or pension applies.
• Add old-regime deductions separately, including 80C, 80D, NPS, HRA and home loan interest.
• Review old-regime taxable income and new-regime taxable income.
• Compare estimated tax after rebate and cess for both regimes.
• Use the lower estimate only after verifying eligibility and proofs.

Example: comparing deductions before choosing a regime

A salaried person earns Rs 12,00,000 and has 80C, 80D and NPS deductions. The calculator reduces old-regime taxable income using those deductions and compares it with the new-regime estimate.

If the new regime still shows lower tax, the person may prefer new regime. If old regime is lower, the person should verify that every deduction has proper proof.

This comparison is helpful before investing only for tax saving. Sometimes the best financial decision is not the same as the biggest deduction.

Common mistakes to avoid

• Choosing a regime only because it was better last year.
• Adding HRA or deductions without proof.
• Ignoring new-regime standard deduction where applicable.
• Forgetting rebate limits and taxable income thresholds.
• Not checking employer declaration and ITR selection rules.
• Treating the lower estimate as final without verifying special income.

Regime comparison note

This calculator compares simplified estimates. Tax regime choice should be confirmed with current rules, deduction eligibility, proofs, employer records, AIS/TIS and professional advice where needed.

Frequently Asked Questions

Which tax regime is better?

The better regime depends on income, eligible deductions, HRA, NPS, home loan interest, rebate eligibility and proof availability.

Does this include 80C and 80D?

Yes. You can enter 80C, 80D, NPS, HRA, home loan interest and other old-regime deductions.

Should I choose only the lower tax result?

Use the lower estimate as a starting point, then verify eligibility, proofs and filing rules.

Can freelancers compare regimes?

Yes, but freelancers should also review business expense treatment, presumptive taxation and TDS records separately.

Can the best regime change every year?

Yes. Income, deductions, rent, loan interest and tax rules can change, so compare again each year.

Does HRA always reduce tax?

No. HRA depends on salary structure, rent paid, city and proof. Enter only eligible HRA exemption.

Does this handle capital gains?

No. Special-rate income and capital gains should be checked separately.

What documents should I keep for old regime?

Keep investment proofs, insurance receipts, rent proofs, loan interest certificates, NPS records and medical insurance receipts.

Related Guides

• Old vs New Tax Regime Guide
• Best Tax-Saving Investments

Related Tools

• Income Tax Calculator
• SIP Calculator
• PPF Calculator